Hi Andrus,
I tried the 3.0M1 build and am still getting the class not found error
although manifest as a CayenneRuntimeException caused by
ClassNotFoundException.
Here is a trace:
Caused by: org.apache.cayenne.CayenneRuntimeException: [v.3.0M1 Jul 16
2007 22:17:38] Failed to load class com.app.AnnotationType:
com.app.AnnotationType
at org.apache.cayenne.map.ObjEntity.getJavaClass(ObjEntity.java:238)
at
org.apache.cayenne.reflect.PersistentDescriptorFactory.getDescriptor(PersistentDescriptorFactory.java:50)
at
org.apache.cayenne.reflect.ClassDescriptorMap.createDescriptor(ClassDescriptorMap.java:122)
at
org.apache.cayenne.reflect.LazyClassDescriptorDecorator.checkDescriptorInitialized(LazyClassDescriptorDecorator.java:49)
at
org.apache.cayenne.reflect.LazyClassDescriptorDecorator.createObject(LazyClassDescriptorDecorator.java:63)
at org.apache.cayenne.access.DataContext.newObject(DataContext.java:752)
... 26 more
Caused by: java.lang.ClassNotFoundException: com.app.AnnotationType
at
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1359)
at
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1205)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:242)
at org.apache.cayenne.util.Util.getJavaClass(Util.java:566)
at org.apache.cayenne.map.ObjEntity.getJavaClass(ObjEntity.java:235)
... 31 more
The problem is not that Cayenne cannot be found, it occurs when
Cayenne tries to load the mapped classes using the web app class
loader. What I don't get is that why the web app class loader cannot
load the classes.
I am guessing that Axis2 creates a class loader for each web service,
loads the application classes and the jars in the lib folder (thats
why it finds Cayenne jars). But when Cayenne retrieves a class loader
(WebappClassLoader), this class loader is probably the one for the
Axis2 web service, not the one that Axis2 is using to load web
services.
Probably there is a way to get the class loader for the particular web
service within the Axis2 (webapp) servlet.
Best,
- Ajay
On 7/20/07, Andrus Adamchik <[EMAIL PROTECTED]> wrote:
This felt like a nested ClassLoader issue from the beginning... I am
not familiar with the Axis2 archive details, but is it possible to
put Cayenne jar at the same level as the application classes?
Alternatively you can try upgrading to 3.0M1 (you can grab an
*unofficial* build from here: http://people.apache.org/~aadamchik/
release/3.0M1/). 3.0 uses String class names as keys and should
hopefully be free from this problem. Please let me know if that
worked - we will definitely need to fix it if it is still broken in 3.0.
> // DataMaps can contain all kinds of garbage...
> // TODO (Andrus, 10/18/2005) it would be nice
> to log something
> // here, but since EntityResolver is used on
> the client, log4J is
> // a no-go...
Good catch. This is also obsolete in 3.0 - we can use commons
logging. Let me clean it up.
Andrus
> // TODO (Andrus, 10/18/2005) it would be nice
> to log something
> // here, but since EntityResolver is used on
> the client, log4J is
> // a no-go...
On Jul 20, 2007, at 9:15 PM, Ajay H. Daptardar wrote:
> Hi Andrus,
>
> The structure of the Axis2 archive (app.aar) is as follows:
>
> META-INF/
> META-INF/MANIFEST.MF
> META-INF/services.xml
> lib/
> lib/bcel.jar
> lib/cayenne.jar
> lib/jibx-bind.jar
> lib/jibx-extras.jar
> lib/jibx-genbinding.jar
> lib/jibx-genschema.jar
> lib/jibx-run.jar
> lib/mysql-connector-java-5.0.6-bin.jar
> lib/qdox-1.6.1.jar
> lib/stax-api.jar
> lib/wstx-asl.jar
> lib/xmlpull_1_1_4.jar
> lib/xpp3.jar
> app/<APPLICATION CLASSES>
>
> Cayenne jar is in the application's lib folder not axis'. After
> stepping through the debugger, I found out that even though the
> application can load the Cayenne data context, the entity resolver,
> when it PUTS object entities in the cache, it uses the name of the
> entity and when it tries to GET the object entity, it tries to use the
> oe.getJavaClass() which throws an exception. This is not logged and
> the comment there is:
>
> // DataMaps can contain all kinds of garbage...
> // TODO (Andrus, 10/18/2005) it would be nice
> to log something
> // here, but since EntityResolver is used on
> the client, log4J is
> // a no-go...
>
> the Util.getJavaClass() fails to load the (application) class it
> seems.
>
> Thanks,
> Best,
> - Ajay
>
>
>
>
>
> On 7/19/07, Andrus Adamchik <[EMAIL PROTECTED]> wrote:
>> That is strange... I assume Cayenne jars are in "axis2/WEB-INF/lib",
>> and not in some shared location?
>>
>> Andrus
>>
>> On Jul 18, 2007, at 11:53 PM, Ajay H. Daptardar wrote:
>> > Hello all,
>> >
>> > I am trying to use Cayenne within Axis2. I copied the three
>> > configuration XML files into the classes folder for Axis2:
>> >
>> > /opt/apache-tomcat-6.0.13/webapps/axis2/WEB-INF/classes
>> >
>> > I can create the data context object but during runtime, data
>> > context's entity resolver cannot find the mapped class and I get
>> the
>> > following:
>> >
>> > "Class is not mapped with Cayenne"
>> >
>> > However when I run the same application as standalone, I have no
>> > errors.
>> >
>> > Any help much appreciated.
>> >
>> > Best,
>> > - Ajay
>> >
>>
>>
>
>
> --
> The mind is everything; what you think, you become. -- Buddha
>
--
The mind is everything; what you think, you become. -- Buddha
